The high-quality CNC-manufactured OVL Crayford telescope focuser with 10:1 reduction was designed as a replacement for Zahn-trieb focusers, such as those on the Sky-Watcher Evostar-102/120/150, Startravel-102/120/150 and Evostar-80ED/100ED /120ED refractors are used. The focuser accepts 2″ and 1.25″ eyepieces. It is equipped with an adjustable friction, locking screw and a scale on the draw tube. Scope of delivery: 2″ Crayford focuser adapter to 1.25″! Power supply and batteries are not included!